Current protocol
ACFS
Agent Capability Formation Standard defines the shape, scope, and lifecycle states of durable records used by FlowOS.
Protocols
Open foundations for systems that need to carry forward.
Offband publishes technical contracts for durable work. Products can implement them; a protocol is not a product, hosted service, or account system.
Implementation relationships
FlowOS is the current local MCP implementation of ACFS. MCP is an external protocol it uses for client integration. ACFS does not define agent execution, user identity, authorization, hosting, or enterprise governance.